Improvement in horseshoes



` UNTTED STATES PATENT @Erica SAML. VARD, OF CAMBRIDGE, AND L. J. MUN GER, OF CHARLESTOVN, MASS.

V|Mmovers/H5N1' IN HORSESHOS.

Specification forming part of Lettei'sPatent No. 42,@89, dated May 24, 1864.

lO all whom, it may concern:

Beitknown that we, SAMUELWARD, ofCambridge, and L. J .'MUNGER, of Charlestown, in the 'county of Middlesex and State of Massa` chusetts, have invented a new and useful Improvement in Horseshoes; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the saine, reference being had to the accompanying drawings,forming a part of this specification, in which,-`

Figure l is aview of the bottoni of a shoe with one of the heel-calks removed 5 Fig. 2, a separate view of a toe-calk; Fig. 3, a section of the line x y of Fig. l; Fig. 4. an inside View on one ofthe heel-calks, and Fig. 5 a side view of the shoe.

Like parts are indicated by the saure letters in all the drawings.

The nature of our invention consists in the peculiar manner of constructing the shoe so that the calks may be attached to and detached from the shoe without removing the shoe from the hoof ofthe horse, and yet be iirrn and substantial when so attached.

l To enable others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.

We construct the plateA in anyT of the usual forms, with the addition ofthe projections h on the inner sides of the heel and an increased thickness of the plate at the toe and heels. Dovetailed mortises fare cut in the heels and toe of the plate from the inner side, leaving a substantial flange, j, on'the outer side or rim. Into these mortises, from the inner side, are inserted the calks provided with dovetailed tenons or shanks d, to fit the mortises f, and a shoulder projecting over the flange j, bringing the outer edge of the calks flush with the outer edge ofthe plate A; also with shoulders projecting over on the plate back of lnortises for heel-calks, and on each end of mortises for the toe-calk. The heel-calks are held firmly in position by means of a screw, fi, inserted in the projections 71, with a thick and substantial cylindrical head pressing against the inner side ofthe calks, which are made concave to t it. Acrossthe back of the base of the toe calk is a inortise to receive the bar E, which is held in position by the screws g g.

XVe are aware that horseshoes have been constructed with calks that could be attached to and detached from the shoes, and that such calks have been made with dovetailed tenons or shanks and with corresponding mortises in the plate of the shoe. Generally Jche mortises to receive the tenons upon the calks have eX- tended entirely across the plate or base of the shoe, as shown in the drawings accompanying the patent issued to Joseph Carlin, No. 26,832, January 27, 1860, and we are not aware that the outer side of the calk has in any case been supported by a flange, j, left upon the plate or base, as shown by the drawings accompanying this application.A

Having thus described the construction and operation of our invention, what we claim as new, and desire to secure by Letters Patent, 1s-

l. Attaching the heel-calks in the manner and by the means substantially as described.

2. Conflning the toe-calk in its mortise by means of the perfecting portion' j, the bar E,

and the screws g g, substantially as described. 3. Constructing the inside of the heel-calks with a concavity, m, to lit the head of the screw t', substantially as set forth, and for the purpose described.

SAMUEL VARD. L. J .f MUN GER.

Vitnesses: I D. T. SARGENT,

A. G. MoULTon. 

